Pub Date : 1999-09-06DOI: 10.1109/IVEC.1999.830653
Yuan Xiaoyang, Wang Yan, Guo Hua, Wang Qishan
In this paper, a high precision sensor for dynamic torque is introduced. The strain gauge stuck on the shaft is used to sense the torque to be measured. The power supply circuit is linked to the outer power supply through the slip ring. The output frequency signal is transmitted to the secondary meter through the mechanical capacity. The authors' sensor has a span of 0/spl sim/200 Nm, a hysteresis of 0.348%, a repeatability of 0.323 and a linearity of 0.85%. It has been applied in the brake torque of the vehicle brake properties detection-bed and the input torque of the vehicle steering-gear test-bed.
{"title":"High precision sensor for dynamic torque","authors":"Yuan Xiaoyang, Wang Yan, Guo Hua, Wang Qishan","doi":"10.1109/IVEC.1999.830653","DOIUrl":"https://doi.org/10.1109/IVEC.1999.830653","url":null,"abstract":"In this paper, a high precision sensor for dynamic torque is introduced. The strain gauge stuck on the shaft is used to sense the torque to be measured. The power supply circuit is linked to the outer power supply through the slip ring. The output frequency signal is transmitted to the secondary meter through the mechanical capacity. The authors' sensor has a span of 0/spl sim/200 Nm, a hysteresis of 0.348%, a repeatability of 0.323 and a linearity of 0.85%. It has been applied in the brake torque of the vehicle brake properties detection-bed and the input torque of the vehicle steering-gear test-bed.","PeriodicalId":191336,"journal":{"name":"Proceedings of the IEEE International Vehicle Electronics Conference (IVEC'99) (Cat. No.99EX257)","volume":"66 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128223985","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1999-09-06DOI: 10.1109/IVEC.1999.830612
Chang Wenxiu, L. Liguang, Tao Jianwu, Xiao Min, Zeng Zhao-yang
In this paper, a design method of fuzzy control system of engine variable valve timing (VVT) is proposed. In this system, the fuzzy controller is used. The VVT system adopted fuzzy controller eliminates shortcomings in traditional control method such as low accuracy and unsteadiness etc. It has been proved by vehicle road test that the system is effective to meet the demand of real vehicle driving condition, and it has reliable control accuracy, high-speed responsibility and good reliability.
{"title":"Design and application of fuzzy control system of engine variable valve timing","authors":"Chang Wenxiu, L. Liguang, Tao Jianwu, Xiao Min, Zeng Zhao-yang","doi":"10.1109/IVEC.1999.830612","DOIUrl":"https://doi.org/10.1109/IVEC.1999.830612","url":null,"abstract":"In this paper, a design method of fuzzy control system of engine variable valve timing (VVT) is proposed. In this system, the fuzzy controller is used. The VVT system adopted fuzzy controller eliminates shortcomings in traditional control method such as low accuracy and unsteadiness etc. It has been proved by vehicle road test that the system is effective to meet the demand of real vehicle driving condition, and it has reliable control accuracy, high-speed responsibility and good reliability.","PeriodicalId":191336,"journal":{"name":"Proceedings of the IEEE International Vehicle Electronics Conference (IVEC'99) (Cat. No.99EX257)","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127461360","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1999-09-06DOI: 10.1109/IVEC.1999.830708
D. Lin, C. Ren
In this paper, the authors discuss the composition principle of a truck-carried laser communication system and noise compensation method of a photo detector. By using monolithic computer control, the authors have made the APD work under optimal bias voltage conditions and improved the detection sensitivity and strong background resistance of APD photo detecting systems.
{"title":"Truck-carried laser communication system APD compensation method study","authors":"D. Lin, C. Ren","doi":"10.1109/IVEC.1999.830708","DOIUrl":"https://doi.org/10.1109/IVEC.1999.830708","url":null,"abstract":"In this paper, the authors discuss the composition principle of a truck-carried laser communication system and noise compensation method of a photo detector. By using monolithic computer control, the authors have made the APD work under optimal bias voltage conditions and improved the detection sensitivity and strong background resistance of APD photo detecting systems.","PeriodicalId":191336,"journal":{"name":"Proceedings of the IEEE International Vehicle Electronics Conference (IVEC'99) (Cat. No.99EX257)","volume":"127 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131518062","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The paper proposes an algorithm to identify state space noise model from closed-loop system via the numerical algorithm for subspace state space system identification, N4SID. It works well on both stable and unstable systems with serious noises and can derive quite accurate plant and noise models together from closed-loop measurement signals.
{"title":"Identifying noise model in closed-loop using subspace method","authors":"Jingbo Wang, J. Jiya, Xiaoping Liu, Yuan Yao, Guangxiong Wang, Shijie Xu","doi":"10.1109/IVEC.1999.830702","DOIUrl":"https://doi.org/10.1109/IVEC.1999.830702","url":null,"abstract":"The paper proposes an algorithm to identify state space noise model from closed-loop system via the numerical algorithm for subspace state space system identification, N4SID. It works well on both stable and unstable systems with serious noises and can derive quite accurate plant and noise models together from closed-loop measurement signals.","PeriodicalId":191336,"journal":{"name":"Proceedings of the IEEE International Vehicle Electronics Conference (IVEC'99) (Cat. No.99EX257)","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115328035","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1999-09-06DOI: 10.1109/IVEC.1999.830690
Zaimin Zhong, C. Xiang, Muqiao Zheng
This paper describes a shortcut which can simplify the modeling and simulation process of various automotive drivetrain configurations. Based on the physical model equivalent through a "Lever Analogy", the Lagrangian equations of motion are used to derive the dynamic equations of drivetrain mechanisms. The whole derivation process is then programmed using a symbolic calculation package, so that the derivation of governing equations and the transformation of these equations into standard C subroutines can be fully automated. Since the constraints and outer forces which act on the drivetrain are mainly described in the form of energy or generalized forces, the preprocessing work of the modeling process is greatly simplified. Because of special efforts paid to the standardization and abbreviation of the derived governing equations for real-time purposes, this method can be applied to many time-critical drivetrain simulation circumstances, such as the different phases of automatic transmission controller development and related real-time dynamic simulators or hardware-in-the-loop simulations.
{"title":"Drivetrain modeling and model analysis for real-time application","authors":"Zaimin Zhong, C. Xiang, Muqiao Zheng","doi":"10.1109/IVEC.1999.830690","DOIUrl":"https://doi.org/10.1109/IVEC.1999.830690","url":null,"abstract":"This paper describes a shortcut which can simplify the modeling and simulation process of various automotive drivetrain configurations. Based on the physical model equivalent through a \"Lever Analogy\", the Lagrangian equations of motion are used to derive the dynamic equations of drivetrain mechanisms. The whole derivation process is then programmed using a symbolic calculation package, so that the derivation of governing equations and the transformation of these equations into standard C subroutines can be fully automated. Since the constraints and outer forces which act on the drivetrain are mainly described in the form of energy or generalized forces, the preprocessing work of the modeling process is greatly simplified. Because of special efforts paid to the standardization and abbreviation of the derived governing equations for real-time purposes, this method can be applied to many time-critical drivetrain simulation circumstances, such as the different phases of automatic transmission controller development and related real-time dynamic simulators or hardware-in-the-loop simulations.","PeriodicalId":191336,"journal":{"name":"Proceedings of the IEEE International Vehicle Electronics Conference (IVEC'99) (Cat. No.99EX257)","volume":"1 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121088663","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1999-09-06DOI: 10.1109/IVEC.1999.830720
W. Ren, Miaohua Huang, Guodong Jin, Yunqing Zhang, Yongzhi Fu, Yu‐Liang Yang, Jian Song
Virtual prototype technology and its corresponding software have been used to model and simulate a certain light truck. The main consideration has been on the method of model building and validation and use of virtual prototype technology as an alternative of the real vehicle test. This has changed the traditional design process and made the concurrent design reality.
{"title":"Virtual prototype technology in automotive concurrent design","authors":"W. Ren, Miaohua Huang, Guodong Jin, Yunqing Zhang, Yongzhi Fu, Yu‐Liang Yang, Jian Song","doi":"10.1109/IVEC.1999.830720","DOIUrl":"https://doi.org/10.1109/IVEC.1999.830720","url":null,"abstract":"Virtual prototype technology and its corresponding software have been used to model and simulate a certain light truck. The main consideration has been on the method of model building and validation and use of virtual prototype technology as an alternative of the real vehicle test. This has changed the traditional design process and made the concurrent design reality.","PeriodicalId":191336,"journal":{"name":"Proceedings of the IEEE International Vehicle Electronics Conference (IVEC'99) (Cat. No.99EX257)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127205032","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1999-09-06DOI: 10.1109/IVEC.1999.830738
M. Wada, K. Yoon, H. Hashimoto, S. Matsuda
This paper describes the advanced parking assistance system developed using high accuracy position sensing. A real-time high accuracy absolute position sensing that may be used not only for parking assistance system was used as the sensing system. The main issues in implementing the assistance system are the position sensing and the human guidance through human interface. The developed positioning, human interface, and guidance schemes, simulations and experiments are presented.
{"title":"Parking assistance system based on high accuracy position sensing","authors":"M. Wada, K. Yoon, H. Hashimoto, S. Matsuda","doi":"10.1109/IVEC.1999.830738","DOIUrl":"https://doi.org/10.1109/IVEC.1999.830738","url":null,"abstract":"This paper describes the advanced parking assistance system developed using high accuracy position sensing. A real-time high accuracy absolute position sensing that may be used not only for parking assistance system was used as the sensing system. The main issues in implementing the assistance system are the position sensing and the human guidance through human interface. The developed positioning, human interface, and guidance schemes, simulations and experiments are presented.","PeriodicalId":191336,"journal":{"name":"Proceedings of the IEEE International Vehicle Electronics Conference (IVEC'99) (Cat. No.99EX257)","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121805011","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A passenger car equipped with continuously variable transmission (CVT) can steplessly change speed ratio according to road resistance during car driving. In the last decade, cars with CVT have rapidly increased in the world for smooth shifting without any uncomfortable shift shock, superb dynamic performance, low waste emission and good fuel economy. The paper establishes a dynamics model of a power train composed of engine-transmission-road. The integrated control of transmission-engine is investigated for improving a vehicle's fuel economy, dynamic performance, as well as vehicle speed controllability in terms of driver requirements.
{"title":"Research on integrated control strategy of CVT for passenger cars","authors":"Hongyan Wang, Yunshan Zhou, Boying Zhang, Xiding Qiu","doi":"10.1109/IVEC.1999.830715","DOIUrl":"https://doi.org/10.1109/IVEC.1999.830715","url":null,"abstract":"A passenger car equipped with continuously variable transmission (CVT) can steplessly change speed ratio according to road resistance during car driving. In the last decade, cars with CVT have rapidly increased in the world for smooth shifting without any uncomfortable shift shock, superb dynamic performance, low waste emission and good fuel economy. The paper establishes a dynamics model of a power train composed of engine-transmission-road. The integrated control of transmission-engine is investigated for improving a vehicle's fuel economy, dynamic performance, as well as vehicle speed controllability in terms of driver requirements.","PeriodicalId":191336,"journal":{"name":"Proceedings of the IEEE International Vehicle Electronics Conference (IVEC'99) (Cat. No.99EX257)","volume":"61 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114258596","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1999-09-06DOI: 10.1109/IVEC.1999.830740
M. Sunwoo, Hansub Sim, Kangyune Lee
Liquefied petroleum gas (LPG) is a mixture of propane and butane gas, and LPG has been used worldwide in commercial light-duty vehicle fuel. LPG is one of the most promising alternative fuels for light-duty vehicles because it has higher octane number, lower maximum combustion temperature and lower CO and HC emissions than those of gasoline. In this study, a prototype electronic control unit (ECU) for an LPG engine with a bypass injector is developed and evaluated. Hardware and software of the ECU are designed for air-fuel ratio control of an LPG engine. The ECU is built using a Motorola MCU MC68HC05. In order to handle appropriate air-fuel ratio control, a modified PI control scheme is designed and implemented in the ECU. At low engine speed operation, it is difficult to meet the stoichiometric air-fuel ratio due to poor fuel feeding which is the nature of LPG engines. Furthermore during the idle operation, it is more difficult to maintain the stoichiometric air-fuel ratio because of the increase of cycle time delay and poor combustion condition. However during high engine speed operation, the variation of air-fuel ratio from the stoichiometric is substantially decreased, thus the emissions of its engine are reduced. Experimental results show that the prototype LPG ECU and its control scheme provide superior engine performance in terms of idle stability and emission reduction.
{"title":"Design and development of an ECU anti its air-fuel ratio control scheme for an LPG engine with a bypass injector","authors":"M. Sunwoo, Hansub Sim, Kangyune Lee","doi":"10.1109/IVEC.1999.830740","DOIUrl":"https://doi.org/10.1109/IVEC.1999.830740","url":null,"abstract":"Liquefied petroleum gas (LPG) is a mixture of propane and butane gas, and LPG has been used worldwide in commercial light-duty vehicle fuel. LPG is one of the most promising alternative fuels for light-duty vehicles because it has higher octane number, lower maximum combustion temperature and lower CO and HC emissions than those of gasoline. In this study, a prototype electronic control unit (ECU) for an LPG engine with a bypass injector is developed and evaluated. Hardware and software of the ECU are designed for air-fuel ratio control of an LPG engine. The ECU is built using a Motorola MCU MC68HC05. In order to handle appropriate air-fuel ratio control, a modified PI control scheme is designed and implemented in the ECU. At low engine speed operation, it is difficult to meet the stoichiometric air-fuel ratio due to poor fuel feeding which is the nature of LPG engines. Furthermore during the idle operation, it is more difficult to maintain the stoichiometric air-fuel ratio because of the increase of cycle time delay and poor combustion condition. However during high engine speed operation, the variation of air-fuel ratio from the stoichiometric is substantially decreased, thus the emissions of its engine are reduced. Experimental results show that the prototype LPG ECU and its control scheme provide superior engine performance in terms of idle stability and emission reduction.","PeriodicalId":191336,"journal":{"name":"Proceedings of the IEEE International Vehicle Electronics Conference (IVEC'99) (Cat. No.99EX257)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131283295","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1999-09-06DOI: 10.1109/IVEC.1999.830628
R. Luquan, C. Hongwei, Wang Tieshan
In this paper, a dynamic test of an Audi disc brake is performed on the JF-132 vehicle brake tester. The ARX model of the brake dynamics is developed. Based on measured data, model structure is determined, and the model parameter is identified employing the optical instrumental variable method. Through validation of residual whiteness and comparison of different observed data, the precision of the model is confirmed.
{"title":"Dynamic system identification of Audi disc brake under anti-lock condition","authors":"R. Luquan, C. Hongwei, Wang Tieshan","doi":"10.1109/IVEC.1999.830628","DOIUrl":"https://doi.org/10.1109/IVEC.1999.830628","url":null,"abstract":"In this paper, a dynamic test of an Audi disc brake is performed on the JF-132 vehicle brake tester. The ARX model of the brake dynamics is developed. Based on measured data, model structure is determined, and the model parameter is identified employing the optical instrumental variable method. Through validation of residual whiteness and comparison of different observed data, the precision of the model is confirmed.","PeriodicalId":191336,"journal":{"name":"Proceedings of the IEEE International Vehicle Electronics Conference (IVEC'99) (Cat. No.99EX257)","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114717834","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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